The first command will dump the database data into json format then the second one will load them into your mysql database, always on the 0.7.43 version this is very important because for loading data the version must be the same from the data dump.

Comments

In theory this should work, but for large data sets this may be slow (the json loaddata method). If your sqlite is already on version 0.7.48, then you don't need to migrate afterwards. You can do migrations either before or after. Marked your question as feature request because more robust script would be necessary for larger sites.